Original scientific paper

Finite volume modeling of the solidification of an axial steel cast impeller

M. Copur ; Metallurgical and Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak Istanbul, Turkey
M. N. Eruslu ; Metallurgical and Materials Engineering Department, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Maslak Istanbul, Turkey

Abstract

In the foundry industry, obtaining the solidification contours in cast geometries are extremely important to know the last location(s) to solidify in order to define the correct feeding path and the number of risers. This paper presents three-dimensional simulation of transient conduction heat transfer within an axial impeller, made of AISI 1016 steel, poured and solidified in chemically bonded mold and core medium, by using FVM technique and ANSYS CFX. Specific heat, density and thermal conductivity of AISI 1016 steel, mold and Core materials are considered as functions of temperatures. In this transient thermal analysis, the convection heat transfer phenomenon is also considered at the outer surfaces of the mold. In order to shorten the run-time, the nonlinear transient analysis has been made for 600/3600 segment of the impeller, core and mold. The solidification contours of the impeller as well as isothermal lines in core and mold have been obtained in 3-D. The cooling curves of diff erent points are also shown in the result section.

Keywords

steel casting; heat transfer of casting; solidification; finite volume modeling; impeller; ANSYS

Hrčak ID:

110056

URI

https://hrcak.srce.hr/110056

Publication date:

1.4.2014.

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